Kapnometer
烟密度计
🗣️ 情景例句
They'll be here soon, and then we'll eat.
他们马上就到。他们一到就开饭。
Please turn in your paper before leaving.
请在离开前将论文交上。
But I can't find it. I think I've lost it.
但我现在找不到了。我想我弄丢了。”